XLSMHTML File Extension
Microsoft Excel MIME HTML Spreadsheet
- File Type xlsmhtml
- Developer Microsoft
- Popularity
- Application Microsoft Excel
- Category Spreadsheet Files
What is a XLSMHTML file?
Files with the XLSMHTML extension are specifically tied to Microsoft Excel MIME HTML Spreadsheet, a Spreadsheet Files type, and there are 113 files in this category.
Microsoft, the developer of the Microsoft Excel MIME HTML Spreadsheet (XLSMHTML), has released file format and 242 programs designed to handle them.
XLSMHTML files are compatible with various operating systems, including Windows and Mac OS. There are 2 programs available to open a XLSMHTML file, including popular tools like Microsoft Excel and Microsoft Office.
Programs that support XLSMHTML files
How to open a XLSMHTML file?
If you are having trouble opening a XLSMHTML file, it usually means the right software is not installed. Choose a program from the list that matches your operating system. Next, visit the official website of the developer, download the software, and install it on your device.
Microsoft Excel and Microsoft Office are among the most widely used programs for handling XLSMHTML files. To set up the newest version of Microsoft Excel on your device, simply go to the official Microsoft website. There you can download the edition compatible with every operating system.
Once setup is done, your operating system should assign Microsoft Excel as the default app for XLSMHTML files.
Set Microsoft Excel as the default XLSMHTML program
Change Default Program on Mac
- Right click or Control + left click on the desired XLSMHTML file;
- Choose "Open in Application" and click "Other";
- Scroll down to the bottom of the window, where you will find the "Enable" menu. Default, "Recommended Programs" will be selected;
- In this menu, choose "All Programs" and navigate to Microsoft Excel. Check the box next to "Always open in app" to make it the default program.
Change default programs in Windows
- To get started, right-click your XLSMHTML file, then choose "Open With" and select "Choose Another Application" from the context menu;
- In the pop-up window, select the Microsoft Excel application;
- Check the "Always use this application" checkbox, and then click "OK" to apply the selected application as the default for opening XLSMHTML files.
How to edit a XLSMHTML file?
To modify XLSMHTML files, it is necessary to install dedicated software that lets you open and edit spreadsheet files. Online XLSMHTML editors generally offer fewer tools compared to programs designed for Microsoft Excel MIME HTML Spreadsheet.
Best XLSMHTML editors 2026
Following these criteria, we have put together a list of recommended XLSMHTML editors.
| XLSMHTML Editor Software | Developer | Platforms | Overall Rating |
|---|---|---|---|
| Microsoft Excel | Microsoft | Windows, Mac OS, Apple iOS, Android | 4.7 out of 5 (37 reviews) |
Convert files to and from XLSMHTML
If you struggle with a XLSMHTML file, consider converting it to alternative formats such as CSV, XLS, XLSX, XLSB or other similar file types.
It is important to understand that converting a XLSMHTML file might limit certain functions, but this conversion is usually reversible.
Convert XLSMHTML to other file formats
Solve problems with XLSMHTML files
If you encounter issues with XLSMHTML files, don’t worry—most can be fixed with minor software adjustments. Refer to the troubleshooting tips below.
What are the steps to repair a damaged XLSMHTML file?
Start a data recovery program and open the damaged XLSMHTML file. Then, choose the "Repair" option from the menu. Please wait patiently for the recovery process to finish as it will automatically repair the damaged spreadsheet files.
How can I determine if my XLSMHTML file is damaged?
The signs of corrupted XLSMHTML spreadsheet files can manifest as:
- Trying to work with the archive in Microsoft Excel or other programs causes instability or program crashes;
- Error notifications appear during file manipulation;
- The file does not open correctly or displays error messages;
- An unexplained increase in the size of the XLSMHTML file;
- The file shows slow performance when edited in Microsoft Excel;
What are the reasons behind Microsoft Excel crash?
Insufficient software updates are a likely cause of Microsoft Excel crashes. Be sure to install the latest updates for Microsoft products.
Restarting your computer will solve many common problems, which is why it’s the first thing you should do before changing any settings related to the software.